1,720,967 research outputs found
La variabilità della frequenza cardiaca e il biofeedback del tono vagale.
No full textIn recent years there has been a substantial increase in research on heart rate variability (HRV), as an index of autonomic nervous system regulation. HRV-Biofeedback has been applied in a number of medical, psychiatric or health related conditions characterised by reduced HRV. This review provides a general overview of HRV psychophysiology, methods of measurement and the principal applications of HRV-Biofeedback. Data support the clinical efficacy of the treatment in several clinical conditions; however issues for mechanisms of effect should be seriously considered in order to advance our understanding of mechanisms underlying HRV-Biofeedback. Further research should be supported and encouraged in order to strengthen the evidence for the efficacy of such a promising psychophysiological treatment. [ABSTRACT FROM AUTHOR
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Metric qualities of the cognitive behavioral assessment for outcome evaluation to estimate psychological treatment effects
Full text linkBackground: Cognitive behavioral assessment for outcome evaluation was developed to evaluate psychological treatment interventions, especially for counseling and psychotherapy. It is made up of 80 items and five scales: anxiety, well-being, perception of positive change, depression, and psychological distress. The aim of the study was to present the metric qualities and to show validity and reliability of the five constructs of the questionnaire both in nonclinical and clinical subjects. Methods: Four steps were completed to assess reliability and factor structure: criterion-related and concurrent validity, responsiveness, and convergent-divergent validity. A nonclinical group of 269 subjects was enrolled, as was a clinical group comprising 168 adults undergoing psychotherapy and psychological counseling provided by the Italian public health service. Results: Cronbach's alphas were between 0.80 and 0.91 for the clinical sample and between 0.74 and 0.91 in the nonclinical one. We observed an excellent structural validity for the five interrelated dimensions. The clinical group showed higher scores in the anxiety, depression, and psychological distress scales, as well as lower scores in well-being and perception of positive change scales than those observed in the nonclinical group. Responsiveness was large for the anxiety, well-being, and depression scales; the psychological distress and perception of positive change scales showed a moderate effect. Conclusion: The questionnaire showed excellent psychometric properties, thus demonstrating that the questionnaire is a good evaluative instrument, with which to assess pre- and post-treatment outcomes
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Impact of Clinical and Quality of Life Outcomes of Long-Stay ICU Survivors Recovering From Rehabilitation on Caregivers' Burden
No full textThe objective of this work was to evaluate the time course of clinical and health-related quality of life outcomes of long-stay ICU survivors' and caregivers' burden
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Il Maugeri Stress Index questionnaire per la valutazione dello stress lavoro correlato
No full textViene presentata la validazione di un questionario costruito per la valutazione del rischio stress correlato e delle componenti che lo possono determinare.
Per la costruzione del questionario si sono seguite le seguenti fasi: 1) analisi critica degli strumenti presenti in letteratura; 2) selezione di item rilevanti e formulazione di un questionario preliminare; 3) analisi della comprensibilità degli item mediante focus group; 4) e successiva somministrazione ad un campione di 329 soggetti operanti in strutture pubbliche e private dell’industria e del terziario ed ad un campione di 29 soggetti che lamentavano stress e vessazioni in ambito lavorativo.
Il Maugeri Strees Index raggiunge un valore di affidabilità (alfa di Cronbach) pari a 0.93. L’analisi fattoriale ha permesso di individuare una struttura a 5 fattori: Benessere, Adattamento, Supporto, Irritabilità, Evitamento. Si riscontra differenza statisticamente significativa, sia nel punteggio totale di MSI sia nelle sottoscale, tra soggetti che non riferivano stress e quelli che erano connotati da presenza di stress lavorativo percepito. In conclusione, il questionario Maugeri Stress Index presenta buone caratteristiche di attendibilità e di validità di costrutto; l’analisi fattoriale ha confermato una struttura pluridimensionale, caratterizzata da cinque sottoscale
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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